Forging machine



i Aug. 7, 1928. www

H. B. HALVORSEN FORGING MACHINE Filed April 2o, 1925 {Patented Sings 7, 1928.

HALCBERT'B. HALVORSEN, OF MCHIGAN CITY,INDDT, ASSIGKOR TO SULLVAN MACHINERY COMPANY, A. CORPORATION 0F ,MASSACHUSETT nor-teme naci-nim.

' Appiication iiiea April ao, 1925.l seriai No. 24,419.

rhis invention relates to forging machines.`

has been formed into a complete bit.- Dur ing a normal forging operation the cutting portion of theV bit which is relatively thin 'is' m cooled, due to"contactwithl the cold vforging die, while the shank of the bit retains conpering purposes it is necessary to allow a sufficient lengthv of time for distribution of the i heat in the shank to the cutting portion after which the bitlcaii be discharged into the tempering bath. This holding or heat dis- Vtribution operation `takes place after the formedvbit' has been discharged from-the V Zone in which the forgingrdie operates thus y permitting another bit to be forged during said holding operation. An object of the invention is accordingly`to provide improved means for allowing distribution of the forg l ing heatforteinpering purposes. A further object is to provide improved means where-v by sutlicient time will be obtained for allowing this heat distribution and specifically to havesaidnieans automatically controlled by :io oiV coordinated withV some voperation; of the Jifrstill further object is 'to pro machine. vide improved means whereby two phases of this latter operation will be involvedthereby providing a suitable length of 'time for heat distribution@ A more vspeciic object of the inveiitionis to provide a double battle arrangement whereby :the bit :upon initialdischarge from theffor'ging machine will be interrupted ai'idfthen upon operation of the' ao forging machine to forge another bit the iii-st bit will Vmove further, only to be interrupted by a second baffle; and then upon dis charge of the second'bit .the last battle will he operated to. allow discharge of the first- Ya5 bitv into its bath., A' further specific object of the invention vis to have said baliles controlled by'theffoottreadle controlling the operation of the forgingdie.

In the accompanying drawings I' have 59 shown for purposes of illustration one form which. my invention may assume in practice.

r Fig. '1 is a side elevation of a forging inachinev with my improved means attached 52 thereto.

line 5 5 of Fig. l. l siderable heat. To utilize this heat for temi F ig. 2 is an end elevation of the machine,

In the illustrative embodiment of my invention Iha've shown a machine ofthe type which is the invention of one Harry C. Johansen, Pat. No.,1,604,414, and comprises a frame 1 mountedl upon suitable standards oi legs 2 and having a belt driven iiy wheel B adapted to reciprocate a suitable ci'osshead 4 slidably mounted iii a horizontal plane in the front end of the frame `1. head carries a clapper box mounted forging roller 5 'having a uniform annular groove 6y adapted to form the cuttingportion 7 of a cutter bit 8 which is held during the forging opeiationin la suitable combined discharge and holding mechanism 9. 'U pon completion ofV the forging operation the mechanism 9 will be laterally'shifted by a suitable hand operated lever 11 toV allow discharge of the bit "through an opening' 10 upon a. chute 12' Jf This cross- (ill 18 vadjacent 'the trunnions thereof, while fixed toone of the truiinions on the' outer side of the bracket 19 is a gearsegment V214 adapted to have engagement witha second gear segment 22 fixed to one of the truiinioiis of the baflie 14, it being noted from Fig. 5 that the baitles`14 and`18 are normally angiilarly disposed andtliat the saine will always retain an angular'relation during relative Vmovement therebetween.. Carried by the segment 22 is an arm 23 having an opening 24 adapted to loosely receive a! rod 25 having nuts 26 thereon to forni a suitable operating con iiection for actuating the baffles, it being noted that the surface of the arm 23 adja- *i the flywheel.V In operation, after the bit blank has been,j

cent the opening 24 is rounded Vas at 27 thereby always to have the nuts 26 in contact lost motion during operation. A foot treadle 28 to which the lower end of the rodv 25is pivotally connected has an upwardly eX- tending arin29 to whichis pivotally connected a clutch operating rod 30 forl controlling reciprocation of the crosshead 4 by inserted within the, holdingmechanism 9,

28 will as before stated drop the baille ist' and yforging ofthe bit will be controlled by pressing down the treadle 28 which will Vcause also downward movement of the rod 25 with consequent movementof the baiiles leland 1S to thedotted line positions shown in Fig. 5. Assuming that this bit vhas not been discharged, the operator upon releasing the treadle 28 to its full line position shown` in Figi willjthen operate the discharge lever vl1 and cause the bit to be discharged, whereupon it will strike the baille l-l and come to rest. Upon insertion .of a second blank, downward `movement of the treadle allow the bit to Vmove,against the now upwardly extending baille 18, this operation takingplaceV duringthe forging operation of `the secondbit. Thebal'l'le 18 is of course l held in `its upwardly extending position by have provided improved means whereby thethe` operator holding down the treadle 28. The lug 20 will also prevent a bit from slidingfdown against the leg 2 and becoming jammed in anyway or discharging through the baek.. V Upon release ofthe treadlel 28,

thesecond baille will permit theV bit to readilyl slide into a tempering bath contained within a lreceptacle disposed immediately below" the baiile 18, It will thus be, seen that l discharge of abit into a tempering bath from a forging machine is delayed `a siiiiicientV lengthof time andlierein equal Vto a complete vcycle of operation oftheforging die.

-, VVhile -I have 4in this application specifidescribed-one. form which my invention may assume in practice, :it will understood that this form has `been shown for purposes .of illustrationand that the invention may be modiiied and yembodiedv in various other forms without departing from its spirit or the scope of the'appended claims. v, that I claim as rnew and desire to` secureby Letters Patent is: v'

' 1. Incombination, a bit sharpening machine having bit eject-ing means, and means for twice interrupting movement. of said bit after leaving the ejector but before leav-V ing the machine.

2.. The combination with a Vforging mal chine having bit jejecting mechanism, and means operable during a plurality of operations Vof anelement of said machine for controllingan ejected Vwork Ipiece compris- 'actuatebothfof the samey ejected. Y with the arm `.23 and prevent any excessive 1 chine having bit-ejectmg means,\means for is-conipleted.

6. Aiorging macliinejhaving means'for ing 'a pluralityof movable elements, one hej ing` adapted to. be `moved todiSCharge 'a work piece tliei'efi'om upon the other and `toallow said other" element to hold the werk piece andthereafter allow the same to be discharged.' i r 7. rgingmachiiieghaving'means Vfor interrupting movement of an ejected work piece-comprising a `plurality ofangularly vmovable baiileplates, said'fplates being so' arrangedth t if extended dur'ng successive 10e operationstheyfwouldfintersect on opposite sides ofa `common line.

8. A forging machine having. means for. controlling an ejectedwork piece comprisinga plurality of bailleV plates for successive- 105 ly ret-ardingmovement'of said .workpiece fromsaid machine;

9. A forging iiia'ehinehavingl means for controlling an ejectedwork :piece compris-` ing a plurality f angularlyfmovable baille 11e plates `connected by` gears.v

connectedbatlle 'plates, and actuating means 115 4connected to oneoffsaid plates adapted tov l1. A forging machineghaviiigineans `for controlling an operation t-lieieof, meansV forV Vcontrolling an ejected work piece comprisiso ingl a, vplurality of angularly movable gearA connected baffle plates, .and means Ifor controlling said plates' byfsaid meanswhich Vcontrois said operation.

12. A forging machine havingfmea'ns 125 adapted to control movement of an ejected work piece` from saidfmachine.comprising va plurality of means adapted Vto successively controlA movement 'of the work piece.

V13. A forging machine comprising die op- 13e mir erating mechanism, means or ejecting 'forgings 'from the machine including a chute, means ior delaying the eJecting action to permit redistribution oit heat in the toi-ging,

means associated Width said delaying `means for allowing final ejeclting movement of said forging only after completionY of' a 'forging operation on the nent succeeding forging.

l5. A bit sharpening machine con'iprising` mechanism for iioiining heated bit-s, means for controlling said mechanism, means for ejecting oi'gings from the machine including a chute, means for interrupting movee: ment or' said bit from said chute until a torgingoperation lon the next succeeding *bit is started, and other means for further delaying said movement during the forging operation on said succeeding bit.

16. it bit sharpening machine comprising mechanism for iforging heated bits, control means for said mechanism, means for eject ing orgings from the machine including a chute, a baille plate adapted to be operated Vby movement ot' said control i cans for in# terrupting movement ot a bit Jfrom said chute, and a second baille plate 'for 'further interrupting movement ol' said bit after being discharged from said lirst baille plate, said second baille plate also being operated by movement ot said control means.

17. In a 'forging machine, a die, die operating mechanism, controlling means theretore, Work piece holding and discharging means, and means tor delayingV discharge, to permit redistribution et heat in a iinished work piece, including means tor effecting discharge only upon a `complete cycle of operation of the controllii'ig n'iechanisin for the die operating mechanism subsequent to the completion of tlie'operation ot the die upon the Work piece.

18. ln a forging machine, a die, die operating mechanism, work piece holding and discharging means7 and controlling means including a lever movable to eilect forging of a Work piece, and means for delaying discharge to permit redistribution of heat in a finished work piece including means oi effecting discharge only upon a complete cycle of operation oi" said lever subsequent to the completion of the operation ot the die uponthe work piece.

in testimony whereof ture.

atliz; my signa- HALBERT li. HALVORSEN. 

